benneb



(ModeL) 2 Sheets-Shet 1.

. L. D. BENNER.

BAG.

' Patented Jan. 22, 1889.

l1? 1 adifl 2 SheetS-Shet; 2.

(ModeL) L. D. BENNER.

BAG.

Patented Jan. 22, 1889.

N PETERS Pholo-Lilhognpher. Wnhlnghw. D.C.

UNITED STATES PATENT OFFICE.

LORENZOD. BENNER, OF PEORIA, ILLINOIS.

BAG.

SPECIFICATION forming part of Letters Patent No. 396,388, dated January22, 1889.

' Application filed llay 20, 1887. Serial No. 238,876. (ModeL) To allwhont it may concern.-

Be it known that I, LORENZO D. BENNER, a citizen of the United States,and a resident of Peoria, in the county of Peoria and State of Illinois,have invented certain new and useful Improvements in Bags, of which thefollowing is a specification.

This invention relates generally to the formation of the bottoms ofpaper bags, and particularly to the formation of the bottoms of thatclass of bags known as bellows-sided bags and set forth in LettersPatent No. 123,811 to L. C. Crowell. As is well known to thoseacquainted with this art, it has been a great desideratum to so form thebottoms of this class of bags that the necessary creases shall beimparted to the bag at its bottom, which will cause the bag-bottom, whenthe bag is distended to be filled, to assume arectangular form. Manymethods have been proposed by which this has been accomplished; and thepresent invention consists in so forming the bottom that these desiredcreases will be imparted to the bag during its formation and thusobviate any after-1nanipulation thereof.

In the accompanying drawings, Figure 1 is a view of an ordinarybellows-sided tube or bag-blank. Figs. 2 to S, inclusive, represent, byperspective views and a sectional view taken 011 the line :0 0c, theformation of the bag-bottom. Fig. 9 is a perspective view of thecompleted bag-bottom in its flat conditici, and 10 a section of thesame, taken on the line y 1 Fig. 11 is aperspective View thereof, thebag being distended and looking at its bottom; and Fig. 12 is a verticalsec tion taken on the line 'u' ll.

Bags of this class are commonly madefrom an endless web of paper, orother suitable material, that is folded on longitudinal lines, bysuitable means, into. bellows-sided tubular form, as shown in Fig. 1, insuch manner that the edges of the web meet over the center of the tubeand are united by a longitudinal line of paste, said tube beingafterward severed transversely into bag-blanks ready to be formed intobags by the formation of the bottoms. The manner of thus forming abellowssided tube or bag-blank is now too well known to need particulardescription thereof. It

suffices to say that, so far as the present invention is concerned, itcontemplates the em ployment in practice of an endless web or sheets orblanks, as the circumstances of manufacture may require. Thus, with theunderstanding that the bellows-sided tubular bag-blank shown in Fig. 1may be formed in any of the well-known ways, the formation of the bottomthereof will now be described.

The bag-blank previous to the formation of the bottom is preferablycreased on the line a to aid in making the preliminary folds shown inFigs. 2 and 3. end 10 of the upper ply, b, of the blank is turnedrearward on said line a, so as to lie upon the body of the blank orthose portions To effect this the thereof which in the completed anddistended bag, Fig. 12, form underl ing inturned portions 20 22, andthus draw inwardly the edges of the said upper ply, so as to form the'triangular portions 0, which are defined by foldlines 1 2, as seen inFig. 2. The end 12 of the lower ply, d, of the bag is similarly turnedrearward on said line a, so as to lie on its ply upon the body of theblank, as best seen in Fig. 1, similar triangular portions, 0, anddefined by similar fold-lines, being thus formed as the like portions 0on the upper ply, b. The ends of each ply being thus folded back uponthe bag-body, the edge e, say, of the under ply is folded overlongitudinally onto the body of the blank approximately on the innerfold-line, 13, of the bellows, so that said bellows is opened and itstriangular fold c is presented uppermost adjacent to the mouth of thebag, as in Fig. 5. 111 this position of the material the blank iscreased on the line f, and the portion 14, of rhomboidal form, is foldedover on said line f onto the body of the blank, as seen in Fig. 6. Theedge e of the under ply is now returned from its position in Figs. 5 and6 to its normal position at the edge of the blank, and by so doing, theunder ply of the blank having been creased (if desired) on a line, f,similar to linef, previously described, to provide a rhomboidal portion,16, (see Fig. 7,) similar to 14, the said rhomboidal portion will becaused to fold down upon the under ply of the blank, thus bringing thematerial along the line i (which, in fact, is a portion of innerfold-line, 13, of the bellows-fold) over a portion of the mouth of thetube end, as seen in Figs. 7 and 8. In like manner the opposite edge, g,of the under ply of the blank is folded longitudinally back onto thebody of the blank, as was the edge e, and the blank similarlymanipulated to form a second set of rhomboidal portions, let 16, on theopposite sides of the blank, the line 1' joining said two portions, andenvelopin the unclosed portion of the tube end, as seen in Figs. 9 and10, thus completing the formation'of the bag.

Of course suitable lines of paste will be applied to the folded-overends 1012 and the triangular portions 0 0', so that when the rhomboidalportions'll are folded down the meeting surfaces of the material will becc mented together, as in Figs. 10 and 12.

The disposition of the material forming the bag-bottom, as thusdescribed, is such that the four corner portions of the end of the blankare each folded back upon the body of the blank adjacent to such cornerportions, a portion of the inner foldedline, 13, of thebellows-foldsbeing brought over the end of the blank, so as to closeit, as seen inFig. 10,without leaving any loose flaps within the bottom of the bag inwhich the material with which it is filled will lodge; and from thisdisposition of the material it will be seen that, so far as the ultimateclosing of the bottom is concerned, the portions 10 12 and triangularportions 0 and 0 may be omittedthat is to say, those portions at the endof the blank might be absent.

No claim is made herein to the bag shown,

described, and claimed in my pending applications filed February 3,1888, Serial No. 262,S90,and March 10, 1888, Serial No. 266,798.

\Vhat is claimed is' I 1. The herein-described bellows-sided bag, thebottom whereof is provided with the pertions 10 12, folded back upon.the underlying portion of the bag, and the portions 1 c 16, folded overand cemented to the portions 10 '12, substantially as described.

2. The herein-described bellows-sided bag, the bottom whereof whendistended is form ed by the two folded-back portions 1.0 12, theunderlying inturned portions, and the foldedover and overlappingportions 14 1G, substantially as described.

3. The herein-described bellows-sided bag, the bottom whereof whendistended is formed by the oppositely folded-back. portions 10 1:2

and the oppositely folded-over portions 14 16,

the said portions l0 12, contiguous with the portions 14. 16, beingfolded over upon themselves on diagonal lines ff substantially asdescribed.

4. The herein-described bellows-sided bag, the bottom whereof is formedby foldingback the end portions, 10 12, leaving projecting

